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J. J. JOHNSTON.

APPARATUS FOR THE MANUFACTURE OF SOAP.

No. 265,095. Patented Sept. 26, 1882.

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J. JJ 'JOHNS TON. APPARATUS FOR THE MANUFACTURE OF SOAP. No. 265,095. Patented Sept. 26, 188 2.

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UNITED A STATES PATENT FFICE.

JAMES J. JOHNSTON, OF COLUMBIANA, OHIO, ASSIGNOB TO THE UNITED STATES IMPROVEMENT COMPANY, (LIMITED) or SAME PLACE.

APPARATUS FOR THE- MANUFACTURE OF SOAP.

SPECIFICATION forming part of Letters Patent No. 265,095, dated September 26, 188?,

Application filed February 25, 1882. (No model.)

To all whom it may concern:

Be it known that. I, JAMES J. JOHNSTON, of

Golumbiana, in the county of C olumbiana and State of Ohio, have invented a certain new and usefullmprovement in Apparatus for thcManufacture of Soap; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to an improvement in soap and its manufacture; and it consists in making a hard soap for the washing of clothes and for general household purposes by the use of tallow, rosin, lime, soda, ashes, borax, and camphor, treated and combined in the apparatus hereinafter described, my said invention consisting of two parts: first, ot' the apparatus for boiling, mixing, and combining said ingredients in the making ofsaid soap; and, second, in the soap or compound which constitutes the soap. The'said two parts of my invention I make the subject-matter of two applications for Letters Patent, and designate said applications as Division A and Division B. i

To enable others skilled in the art with which my invention is most nearly connected to make and use it, I will proceed to describe the construction and operation of the apparatus which forms the first part of my invention.

In the accompanying drawings, which form part of this specification, Figure 1 is a side ele' vation of the apparatus I employ in the manufacture of my improvement in soap. Fig. 2 is a vertical section of the same.

In the accompanying drawings, A represents the furnace, which is provided with a fire-chamber, B, having fire-door O, grate D, and ash-pan E. Over the fire-chamber B, upon the upper edge of the walls, is suspended a caldron, F, having a flue, G, projecting up through the center thereof. Within this caldron F is suspended another caldron, H, of similar construction, excepting that its tubular center I has an inward projecting flange, J.

Above the caldron H, and around the flue or pipe K, (whichis a continuation of the flue G,) is a canopy, L, constructed of sheet metal, and secured to the flue or pipe K, and communicates therewith by L-shaped tubes or flues M. On the flange J of the tubular center I is a circular rail, N, and above it, on a flange, o, secured to flue G, is another circular rail, P, and between these two tails are grooved carryingrollers Q, pivoted in a wheel, It, having gearteeth S, into which mesh the teeth of a wheel, T, on a shaft, U, journaled in hangers V, and on the outer end of said shalt is a driving-pulley, W. From the periphery of the wheel R project arms X, to which are attached. mixing and stirring armsY. having ontheirlower ends curved arms, Z. The caldron F is provided with a supply-pipe, a, for water, and draw-oft pipe I), said pipes having each a valve, as'ipdicated at c and d. N

The furnace and the several parts connected therewith are constructed of cast-iron, except the canopy L, shaft U, arms Y, and ash-pan E, which are constructed of wroughtiron, the lining of the furnace being tire brick.

From the foregoing description and reference to the accompanying drawings the skillful mechanic will readily understand the construction of the apparatus. I'will therefore proceed to describe its operation, which is as follows: The caldron F being filled with water up to about the dotted line 0, fire is kindled in the fire-chamber B on grate D. Then the ingredients hereinbefore mentioned, in the quantities prepared and treated as set forth in Division B, are charged in the caldron H in the order therein stated. Power being applied to the driving-pulley W, it will revolve the shaft U and wheel T, which will revolve the wheel R, which will cause the arms Y and Z to sweep around in the caldron H, and thereby thoroughly stir, mix, and combinethe ingredients as they are charged into the said caldron. When it becomes necessary to cool'the compound in the caldron H the valves 0 and d are opened, thereby allowing cold water to flow into the caldron F through pipe at and hot water to flow from it through pipe b. This charging of cold and drawing off of hot water will 5 caldrons F and H the liability to burn the indients in caldron H will he carried off through the medium of the canopy L, tubes or fines M, and pipe or flue K.

The advantages due to the peculiar construction and arrangement of the apparatus, as to economy of fuel, utilization of heat, facility for gradual cooling, carrying off the vapors evolved, the convenience resulting from the arrangement of the caldrons, efficiency of the stirring and mixing mechanism, and the compactness of the apparatus as a whole, will be apparent to the skillful soap-maker without further description.

Having thus described the first part of my invention, what I claim is- 1. lhe combination of the furnace A, caldrons F H, having tubular centers G I, circular rails N P, wheel R,having carrier-rollers Q and arms X Y Z, and adriving mechanism, substantially as herein described, and for the purpose set forth.

2. The combination of the c'aldrons'F H, having tubular centers G I, flue K, having pipes M, and canopy L, substantially as herein described, and for the purpose set forth.

3. The combination of the caldron F, having center flue, G, pipes aib, caldron H, having tubular center I, flue K, having pipes M, and canopy L, substantially as herein de scribed, and for the purpose set forth.

- JAMES J. JOHNSTON.

W'itnesses:

T. D. D. OURAND, D. P. OoWL. 

